In this problem, we are given an integer value N. Our task is to find Sum of Series n^2 - (n-1)^2 upto n terms.Let's take an example to understand the problem, Input : N = 3 Output : 6Explanation −[12 - (0)2] + [22 - (1)2] + [32 - (2)2] ... Read More

In this problem, we are given an integer value N. Our task is to find Sum of Series 1^2 - 2^2 + 3^2 - 4^2 ... upto n terms.Let's take an example to understand the problem, Input : N = 3 Output : 6Explanation −12 - 22 + 32 = ... Read More

In this problem, we are given two arrays, positive and distinct. Our task is to find the sum of pairs from two arrays with maximum sum.We will find the pair with the maximum sum with one element from each array.Let's take an example to understand the problem, Input : arr1[] ... Read More

In this problem, we are given a linked list. Our task is to find the sum of even and odd nodes in a linked list.Let's take an example to understand the problem, Input : linked list : 3 -> 2 -> 5 -> 7 -> 1 -> 9 Output : ... Read More

In this problem, we are given a natural number N. Our task is to find the sum of divisors of all the divisors of a natural number.Let's take an example to understand the problem, Input : N = 12 Output : 55Explanation −The divisors of 12 are 1, 2, 3, ... Read More

In this problem, we are given an array arr[] consisting of n integer values. Our task is to find the sum of all unique subarray sum for a given array. Subarray sum is the sum of elements of the given subarray.Let's take an example to understand the problem, Input : ... Read More

In this problem, we are given a binary tree. Our task is to find the sum of all left right in a given Binary Tree.Let's take an example to understand the problem, Input :Output : 8Explanation −All leaf nodes of the tree are : 1, 8 Sum = 1 + ... Read More

In this problem, we are given a binary tree. Our task is to find the sum of all left leaves in a given Binary Tree.Let's take an example to understand the problem, Input : Output : 11Explanation −All leaf nodes of the tree are : 2, 9 Sum = 2 + ... Read More

In this problem, we are given an array arr[] consisting of N integers stored in unsorted order. Our task is to find a subarray with a given sum.Let's take an example to understand the problem, Input : arr[] = {2, 5, -1, 4, 6, -9, 5} sum = 14 Output ... Read More

In this problem, we are given an array arr[] consisting of N positive integers stored in unsorted order. Our task is to find a subarray with a given sum.Let's take an example to understand the problem, Input : arr[] = {2, 5, 1, 4, 6, 9, 5} sum = 11 ... Read More